Above, Meave Leakey and a colleague sift for fossils. Their teams of fossil hunters have been investigating human  origins in the Turkana Basin for more than 40 years.       "Place  a species under stress and you can't tell what will happen," Meave Leakey  said of the effect of famines and climate change in human history. "It  could go extinct, or a new mutation will arise -- in this case, maybe something  that led to advanced language."

A Long Walk Through a Dry Country

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Above, Meave Leakey and a colleague sift for fossils. Their teams of fossil hunters have been investigating human  origins in the Turkana Basin for more than 40 years.       "Place  a species under stress and you can't tell what will happen," Meave Leakey  said of the effect of famines and climate change in human history. "It  could go extinct, or a new mutation will arise -- in this case, maybe something  that led to advanced language."


Above, Meave Leakey and a colleague sift for fossils. Their teams of fossil hunters have been investigating human origins in the Turkana Basin for more than 40 years.

"Place a species under stress and you can't tell what will happen," Meave Leakey said of the effect of famines and climate change in human history. "It could go extinct, or a new mutation will arise -- in this case, maybe something that led to advanced language."

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